Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

1995-01-23

1998-11-24

Couso, Yon J.

Image analysis

Image compression or coding

Including details of decompression

382251, G06K 936

Patent

active

058419047

ABSTRACT:
In coding color still image data into multi-valued image data, the image quality deteriorates when a large compression ratio is used. In the present invention, a transmitted image is classified using a parameter transmitted from the transmitting station, and the deterioration of image quality caused by compression at the transmitting station is estimated from the image classification. In an image reproduction, a quantization table is used in the case of an adaptive discrete cosine transform (ADCT) method to select an optimum neural network suitable for image reproduction and improve the image quality.

REFERENCES:
patent: 4677479 (1987-06-01), Hatori et al.
patent: 4974078 (1990-11-01), Tsai
patent: 5005206 (1991-04-01), Naillon et al.
patent: 5023919 (1991-06-01), Wataya
patent: 5333212 (1994-07-01), Ligtenberg
patent: 5361147 (1994-11-01), Katayama et al.

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